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R. L. GAYLCRD, CF' TRRRYVILLR, CONNECTICUT.

A ALetters Patent No. 60,874, dated January 1, 18.67.'

IMPROVEMENT 1N DRAWER LOCKS.

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` Be it known that I, E. L. GAYLORD, of Terryville, in the county of Litchiieldfand State of Connecticut, l have invented a new and improved Lock; and I do hereby declarethat the following is a full, clear, and exact description thereof, which will enable others skilled in the art to make and use the same, reference being had to the accompanyingdrawings, forming part of this specification, in which- A Figure 1 is an internal view of my invention, the case being in section, as indicated by the line :c nz, iig. 2- Figure-'2, a transverse section of the same, taken in the line x x', iig. 1. Figure 3, a`section of the same, taken inthe line y y, fig. 2. `Figure 4,'a transverse section of the same, taken ih the line z z, fig. 3. Figure 5, a horizontal section of the same, taken in the line z z", iig. 3. Figure 6, a detached view of the key of' the lock. Similar'letters of reference indicate like' parts. i This invention more especially applies to drawer locks, and small locks generally, which are placed upon parts adjacent to each other, such, for instance, as the drawers of' a bureau, the small doors of a secretary, etc. and which should be provided with di'erent keys, so that one key cannot unlock more than one lock. Hitherto these lockshave been expensive to manufacture on account of each lock' requiring a different adjustment of l tumblers; and the object of this invention is to overcome that diiculty, by having the tumblers the same in each l lock and introducing adjustable wards, by which means each lock cau be provided with a key diiierent from the, 4'others at a comparatively triling expense.

A represents the .lock case, and B'the bolt tted therein. C is a-tumbler, which is itted on a pin or stump, a, the latter passing through an oblong slot in the lholt B, and also through a series of wards, D, on or over whichthe bolt slides, the tumbler C being tted on or over `the bolt, and the latter having-a pin, b, projecting from it and into a slot in the tumbler, the pin andl slot requiring thc'tumbler to be moved a certain distance by the key before the bolt can be moved. This arrangement, however, is well knownand very old, and I design to have the tumbler-s of all the locks, or a given series of locks, made precisely the same, so that therewill be no diiliculty in applying the tumblers. In order, however, to have a diiferent key for each lock, or to prevent one key fromA unlocking more than one lock, the one for which it was made, I employ a series of wards, D, `placed one over the other. These wards are simply metal plates having lips, c, projecting from them within the path of the rotation of the bit of the. key. These lips are of idilereutlengths, and Athe bit d of the key has slots, e, cut in it of diierent depths, to correspond to the length of the lips c of the wards, sc that the bit may pass the same; and it is designed to have the lips c of the wards in the several locks all differ as regards length, so that no key will t two locks. It is a very simple. matter to make and adjust the wards D to suit the keys, as-they are all fitted loosely on the pin a, so that they may turn thereon, and a screw, f, passes through an oblong slot, g, in the wards, and into the rear plate of'. the lock case, (see fig. 3,) and by relaxing this kscrew the lips c mafyall be adjusted accurately to the slots e in the bit of the key.

`I claim as new, and desire to secure by Letters Patent- The adjustable wards D, in combination with the bolt B andone'or'more tumblers C, arranged substantially inthe manner as and for the purpose herein set forth.

E. L. GAYLORD.

Witnesses:

J. H. ADAMS, JAMES TERRY, Jr. 

